For many systems, the cost of the solution can be dominated by the Oracle license fee.
A systems solution with CPUs that have a lower Core Processor Licensing Factor
may end up with a lower overall cost than one with a smaller number cores that have a higher Oracle Licensing Factor (aka multiplier).

Oracle has set the multiplier for the newest SPARC chips - the SPARC T3 and the SPARC64 VII+ - very aggressively. The SPARC T3 has a multiplier of 0.25 - the same as the 1.0 GHz UltraSPARC T1 (as featured in the T1000 and T2000). The SPARC64 VII+ has a multiplier of 0.5, which is less than the 0.75 multiplier of the UltraSPARC IV, IV+ or the SPARC64 VI, VII which powered older systems like the V490, E6900 and E25k servers.

Note: the IBM POWER6 and POWER7 systems have a multiplier of 1.0.
The latest AMD and Intel systems a have multiplier 0.5, twice that of the SPARC T3.
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Orgad Kimchi has penned a five-page article on using the Oracle VM Server for SPARC (formerly called Sun Logical Domains or LDoms) version 1.3 Dynamic Resource Management (DRM) for allocating CPUs resources based on workload and pre-defined polices. This technical paper defines three policies for three logical domains, offering commands for managing a policy along with the specific add-policy commands for each logical domain and how to enable them.
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The once Sun Logical Domains is now the Oracle VM Server for SPARC. Leveraging the built-in SPARC hypervisor to subdivide supported platforms' resources (CPUs, memory, network, and storage) by creating partitions called logical (or virtual) domains, the Oracle VM Server allows for the creation of up to 128 virtual servers on one system to take advantage of the massive thread scale offered by the Sun SPARC Enterprise Systems with Chip Multithreading (CMT) technology. Honglin Su writing for Oracle's Virtualization Blog recapitulates the solution's features, architecture, and systems support.
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